Hiya all.

I've really searched the forums before I wrote this!

I found out that:
XLC - 450hp Upgrade
XE7 - Extra front oil cooler

But I don't know about the XLB.
Could it be twin pipe exhausts?

Also I found 0998-1 and 0999-1 on the option code list.
Are these actually optioncodes?
If so, anyone have any ideas on what they are?

/Cheers